Altitudinal Variation in Body Size and Population Density of &lt;I&gt;Nicrophorus investigator&lt;/I&gt; (Coleoptera: Silphidae)

Smith, Rosemary J.; Hines, Amy; Richmond, Stephanie; Merrick, Melissa J.; Drew, Allison E.; Fargo, Rachelle

doi:10.1603/0046-225x(2000)029[0290:avibsa]2.0.co;2

Cited by 43 publications

(46 citation statements)

References 37 publications

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“…In insects, the size of morphological traits often changes along elevation and latitudinal gradients [13,25]. The size of traits is often positively correlated with elevation and latitude [1,36,55], which was not found in our study. This work supports evidence of behavioral and physiological differences between the two groups of beetles and underlines the necessity for using caution in extrapolating information obtained on one population to the other when control measures are being planned.…”

Section: Rapd Analysiscontrasting

confidence: 80%

Morphological and genetic diversity studies among populations of tea mosquito bug, Helopeltis theivora from Assam, India

et al. 2014

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Multilocus DNA fingerprinting and morphometry were compared to evaluate genetic diversity of tea mosquito bug, Helopeltis theivora Waterhouse (Hemiptera: Miridae). Eighty-one female individuals representing 27 populations of H. theivora from tea plantations of different regions of Assam, India were collected and evaluated. Observation of 12 characters i.e. body length, antennae length, head width, stylet length, thorax width, forewing length, forewing width, hind wing length, hind wing width and length of foreleg, middle leg, hind leg revealed distinct pattern in different population of H. theivora. On the basis of morphological traits, six different types of population groups have been identified. Genetic analysis produced a total number of 262 bands, of which 221 (84.35 %) were polymorphic. The number of bands produced per primer varied from 2 to 17. The dendrogram derived from UPGMA cluster analysis indicates three clusters containing 24 populations at 63 % of similarity while three populations viz. H23, H19 and H14 excluded from the major cluster and come out as a discrete cluster. The cluster 1 includes populations from 9 different districts of Assam, cluster 2 again included 5 populations, cluster 3 constitute 3 populations and cluster 4 again consist of 3 populations. Both marker (morphological and molecular) systems indicated that genetic variability within populations examined was significantly high. Appropriate quality and quantity of chemical pesticides used in pest control programmes is a fundamental goal in the tea industry. It is supported by the knowledge of patterns of population connectivity and historical demography.

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Section: Rapd Analysiscontrasting

confidence: 80%

Morphological and genetic diversity studies among populations of tea mosquito bug, Helopeltis theivora from Assam, India

et al. 2014

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“…The problem is that some species show increasing size with increased altitude while others show the reverse trend (Hawkins & deVries, 1996;Chown & Klok, 2003). Size increases are generally explained by a negative relationship between developmental temperature and size among ectothermic animals in a non-resource-limited environment (Atkinson, 1994;Smith et al, 2000). Size decreases, by contrast, as in the Cacopsylla species feeding on Salix lapponum in Norway, are generally thought to result from resource limitations, often linked to seasonal resource availability, restricting potential growth (Hill, Hamer & Hodkinson, 1998).…”

Section: ( 3) Variation In Insect Sizementioning

confidence: 99%

Terrestrial insects along elevation gradients: species and community responses to altitude

2005

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The literature on the response of insect species to the changing environments experienced along altitudinal gradients is diverse and widely dispersed. There is a growing awareness that such responses may serve as analogues for climate warming effects occurring at a particular fixed altitude or latitude over time. This review seeks, therefore, to synthesise information on the responses of insects and allied groups to increasing altitude and provide a platform for future research. It focuses on those functional aspects of insect biology that show positive or negative reaction to altitudinal changes but avoids emphasising adaptation to high altitude per se. Reactions can be direct, with insect characteristics or performance responding to changing environmental parameters, or they can be indirect and mediated through the insect's interaction with other organisms. These organisms include the host plant in the case of herbivorous insects, and also competitor species, specific parasitoids, predators and pathogens. The manner in which these various factors individually and collectively influence the morphology, behaviour, ecophysiology, growth and development, survival, reproduction, and spatial distribution of insect species is considered in detail. Resultant patterns in the abundance of individual species populations and of community species richness are examined. Attempts are made throughout to provide mechanistic explanations of trends and to place each topic, where appropriate, into the broader theoretical context by appropriate reference to key literature. The paper concludes by considering how montane insect species will respond to climate warming.

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“…Morphological differences between populations of the same species dispersed over latitude and elevation gradients have been reported for various insect groups (Hawkins and Lawton, 1995;Smith et al, 2000) and are generally associated with temperature, humidity and photoperiod conditions (Tauber et al, 1986).…”

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confidence: 99%

Short Communication Genetic variability of Mahanarva sp (Hemiptera: Cercopidae) collected from different sites in Brazil

Auad

Domingues²,

Machado³

et al. 2010

Genet. Mol. Res.

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ABSTRACT. Spittlebugs are the leading cause of damage to tall grasses. Annual losses are estimated to reach 2.1 billion dollars in sugarcane crops and grazing land throughout the world. Correct identification of these species is difficult due to similarities in color, body size and male genitalia. Molecular markers have been useful in the identification and assessment of genetic diversity of many species. We investigated the genetic diversity of the spittlebug species Mahanarva fimbriolata, M. spectabilis and M. liturata and looked for markers that could aid in their identification. DNA from 34 spittlebug specimens, collected from six different regions of Brazil (Brasília, Campo Grande, Valença, Presidente Prudente, Juiz de Fora, and Porto Alegre), was analyzed with 29 RAPD primers, generating 501 polymorphic markers. High genetic variability was found among individuals M. fimbriolata (0.37), M. spectabilis (0.18) and M. liturata (0.69). Species-specific molecular RAPD markers were identified for each of the three species; these could be used as auxiliary tools for their correct identification.

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Altitudinal Variation in Body Size and Population Density of <I>Nicrophorus investigator</I> (Coleoptera: Silphidae)

Cited by 43 publications

References 37 publications

Morphological and genetic diversity studies among populations of tea mosquito bug, Helopeltis theivora from Assam, India

Morphological and genetic diversity studies among populations of tea mosquito bug, Helopeltis theivora from Assam, India

Terrestrial insects along elevation gradients: species and community responses to altitude

Short Communication Genetic variability of Mahanarva sp (Hemiptera: Cercopidae) collected from different sites in Brazil

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